Vertical axis wind or water turbine

Vertical axis wind turbine

Vertical axis wind turbine generator

Vertical axis wind turbine system

Vertical axis wind turbine system

Vertical axis wind turbine with controlled gybing

Vertical axis wind turbine with optimized blade profile

Vertical axis wind turbine with optimized blade profile

Vertical axis windmill

Vertical axis windmill

Vertical axis windmill

Vertical axis windmill

Vertical axis windmill and self-erecting structure therefor

Vertical axis windmill and wind turbine system for...

Vertical axis windmill with guiding devices

Vertical shaft driving device for vertical wind mills or the...

Vertical wind turbine power generating tower

Vertical wind turbine system with adjustable inlet air scoop...

Vertical windmill

Vortex hydraulic turbine